Introduce example value object implemented as record.

jmolecules-spring-data-jpa/src/main/java/org/jmolecules/examples/jpa/customer/Customer.java

@@ -24,6 +24,7 @@
 
 import org.jmolecules.ddd.types.AggregateRoot;
 import org.jmolecules.ddd.types.Identifier;
+import org.jmolecules.ddd.types.ValueObject;
 import org.jmolecules.examples.jpa.customer.Customer.CustomerId;
 import org.springframework.util.Assert;
 
@@ -34,7 +35,7 @@
 public class Customer implements AggregateRoot<Customer, CustomerId> {
 
 	private final CustomerId id;
-	private String firstname, lastname;
+	private Name name;
 	private List<Address> addresses;
 
 	public Customer(String firstname, String lastname, Address address) {
@@ -43,13 +44,13 @@ public Customer(String firstname, String lastname, Address address) {
 
 		this.id = CustomerId.of(UUID.randomUUID().toString());
 
-		this.firstname = firstname;
-		this.lastname = lastname;
-
+		this.name = new Name(firstname, lastname);
 		this.addresses = new ArrayList<>();
 		this.addresses.add(address);
 	}
 
+	public record Name(String firstname, String lastname) implements ValueObject {}
+
 	@Value(staticConstructor = "of")
 	public static class CustomerId implements Identifier {
 		private final String id;

jmolecules-spring-data-jpa/src/test/java/org/jmolecules/examples/jpa/ApplicationIntegrationTests.java

@@ -17,6 +17,7 @@
 
 import static org.assertj.core.api.Assertions.*;
 
+import jakarta.persistence.EntityManager;
 import lombok.RequiredArgsConstructor;
 
 import org.jmolecules.examples.jpa.customer.Address;
@@ -29,15 +30,20 @@
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.assertj.AssertableApplicationContext;
 import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.test.context.TestConstructor;
+import org.springframework.test.context.TestConstructor.AutowireMode;
+import org.springframework.transaction.annotation.Transactional;
 
 /**
  * @author Oliver Drotbohm
  */
 @SpringBootTest
+@TestConstructor(autowireMode = AutowireMode.ALL)
 @RequiredArgsConstructor
 class ApplicationIntegrationTests {
 
 	private final ConfigurableApplicationContext context;
+	private final EntityManager em;
 
 	@Test
 	void bootstrapsContainer() {
@@ -55,6 +61,7 @@ void bootstrapsContainer() {
 	}
 
 	@Test // #24
+	@Transactional
 	void exposesPersistenceComponents() {
 
 		var address = new Address("41 Greystreet", "Dreaming Tree", "2731");
@@ -65,6 +72,12 @@ void exposesPersistenceComponents() {
 		var orders = context.getBean(Orders.class);
 		var order = orders.save(new Order(customer));
 
-		customers.resolveRequired(order.getCustomer());
+		em.flush();
+		em.clear();
+
+		var resolved = customers.resolveRequired(order.getCustomer());
+
+		assertThat(resolved.getName().firstname()).isEqualTo("Dave");
+		assertThat(resolved.getName().lastname()).isEqualTo("Matthews");
 	}
 }